nipple

English Thesaurus

1. a flexible cap on a baby's feeding bottle or pacifier (noun.artifact)

hypernym	:	cap,
definition	:	a top (as for a bottle) (noun.artifact)

part meronym	:	bottle, feeding bottle, nursing bottle,
definition	:	a vessel fitted with a flexible teat and filled with milk or formula; used as a substitute for breast feeding infants and very young children (noun.artifact)

2. the small projection of a mammary gland (noun.body)

hypernym	:	reproductive organ, sex organ,
definition	:	any organ involved in sexual reproduction (noun.body)

part meronym	:	mamma, mammary gland,
definition	:	milk-secreting organ of female mammals (noun.body)